APS in fight with rooftop solar firms over rates

PHOENIX (AP) - Arizona's utility regulators are about to wade into a very public fight over rooftop solar power, and their decision could crimp solar's booming growth by making it less attractive for homeowners.

The battle has seen the state's largest utility spend more than $3.7 million to convince the public that homeowners using solar panels are costing other customers money.

The solar industry has spent at least $370,000 on advertising countering the argument made by Arizona Public Service.

APS wants the Arizona Corporation Commission to cut payments for excess power generated by rooftop solar panels. The state's ratepayer advocate instead recommends a small monthly fee to offset the costs of running the grid. The commission's staff recommends no action, for now.